How did Aryan religion contribute to class differences in India?

1 Religious rituals usually involved holding large parties, and only wealthy people could afford the parties.
2 The Vedas contained the directions for how to perform sacrifices, and only priests were allowed to own the Vedas.
3 Common people disagreed with participating in religious rituals because the sacrifices involved burning foods like fruit and meat.
4 Reading religious texts required education, and making sacrifices cost money, so wealthier people had greater access to religion.